title: Phase function design of a diffraction grating lens for an optical imaging system from a Fraunhofer diffraction perspective.
abstract: The potential exists to apply diffraction gratings to optical imaging systems to improve camera resolution and shorten optical length. However, we have noted the generation of striped flare lights, which differ from unnecessary-order diffraction lights, under intense lighting. We have elucidated the generation principle of these new striped lights and have discovered that they are caused by narrow diffraction grating rings. In this paper, using an analysis based on Fraunhofer diffraction, we suggest a way of minimizing them by designing an appropriate phase function structure, and test the efficacy of this design using our own manufactured prototype.
authors.forename: Takamasa
authors.initials: T
authors.lastname: Ando
authors.forename: Tsuguhiro
authors.initials: T
authors.lastname: Korenaga
authors.forename: Masa-aki
authors.initials: MA
authors.lastname: Suzuki